[....] Starting enhanced syslogd: rsyslogd[   10.329619] audit: type=1400 audit(1515276356.809:4): avc:  denied  { syslog } for  pid=3188 comm="rsyslogd" capability=34  scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.15.225' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   19.262638] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in;
[   19.262638]    program syzkaller004537 not setting count and/or reply_len properly
[   19.266646] kasan: CONFIG_KASAN_INLINE enabled
[   19.267283] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   19.268355] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   19.269205] Dumping ftrace buffer:
[   19.269686]    (ftrace buffer empty)
[   19.270182] Modules linked in:
[   19.270669] CPU: 0 PID: 3336 Comm: syzkaller004537 Not tainted 4.9.75-g06fe41f #16
[   19.271712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   19.272957] task: ffff8801cb8a1800 task.stack: ffff8801c91f8000
[   19.273751] RIP: 0010:[<ffffffff8266880c>]  [<ffffffff8266880c>] sg_read+0xd0c/0x1440
[   19.274917] RSP: 0018:ffff8801c91ffa50  EFLAGS: 00010246
[   19.275636] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff826687d3
[   19.276699] RDX: 0000000000000000 RSI: 0000000000000071 RDI: ffff8801c5428170
[   19.277686] RBP: ffff8801c91ffb58 R08: 0000000000000000 R09: ffffed003931367d
[   19.278647] R10: 0000000000000005 R11: ffffed003931367c R12: 0000000000001000
[   19.279610] R13: 0000000000000000 R14: ffff8801c989b3c0 R15: ffff8801c5428140
[   19.280579] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000085a1840
[   19.281676] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   19.282449] CR2: 0000000020aaaf6b CR3: 00000001c621e000 CR4: 0000000000160670
[   19.283421] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   19.290654] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   19.297895] Stack:
[   19.300008]  ffff8801d48cdd40 ffff8801c91ffa80 ffff8801c5428158 ffff880100000071
[   19.307956]  0000000000000000 ffff8801c5428168 0000000000000095 0000000000000246
[   19.315898]  ffff8801d15e2f00 1ffff1003923ff56 0000000020aaaf6b 0000000020aaaf8f
[   19.323852] Call Trace:
[   19.326408]  [<ffffffff82667b00>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   19.333044]  [<ffffffff81642ca0>] ? fsnotify+0xf30/0xf30
[   19.338470]  [<ffffffff81bda799>] ? avc_policy_seqno+0x9/0x20
[   19.344321]  [<ffffffff8156b481>] do_loop_readv_writev.part.17+0x141/0x1e0
[   19.351304]  [<ffffffff81bd1859>] ? security_file_permission+0x89/0x1e0
[   19.358021]  [<ffffffff82667b00>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   19.364649]  [<ffffffff82667b00>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   19.371279]  [<ffffffff815703a2>] compat_do_readv_writev+0x522/0x760
[   19.377739]  [<ffffffff8156fe80>] ? do_pwritev+0x1a0/0x1a0
[   19.383332]  [<ffffffff838b01bc>] ? _raw_spin_unlock+0x2c/0x50
[   19.389271]  [<ffffffff814cde8e>] ? handle_mm_fault+0x6ee/0x2530
[   19.395381]  [<ffffffff814cd7a0>] ? __pmd_alloc+0x410/0x410
[   19.401057]  [<ffffffff81beb0e2>] ? selinux_file_permission+0x82/0x460
[   19.407691]  [<ffffffff815706c3>] compat_readv+0xe3/0x150
[   19.413193]  [<ffffffff81570824>] do_compat_readv+0xf4/0x1d0
[   19.418968]  [<ffffffff81570730>] ? compat_readv+0x150/0x150
[   19.424741]  [<ffffffff81572d96>] compat_SyS_readv+0x26/0x30
[   19.430508]  [<ffffffff81572d70>] ? SyS_pwritev2+0x80/0x80
[   19.436107]  [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890
[   19.442218]  [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c
[   19.448857]  [<ffffffff838b2334>] entry_SYSENTER_compat+0x74/0x83
[   19.455050] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 05 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 
[   19.481352] RIP  [<ffffffff8266880c>] sg_read+0xd0c/0x1440
[   19.487059]  RSP <ffff8801c91ffa50>
[   19.490932] ---[ end trace 1d82b9cb2d79a126 ]---
[   19.495668] Kernel panic - not syncing: Fatal exception
[   19.501476] Dumping ftrace buffer:
[   19.504995]    (ftrace buffer empty)
[   19.508669] Kernel Offset: disabled
[   19.512259] Rebooting in 86400 seconds..